Shamf

Shit hard as a mother fucker.
Going hard to the paint, balls to the wall. Commonly used as a sports acronym describing someone playing so hard or doing something with reckless abandon for there own well being, they have a high likleyhood of shitting there own pants or getting his intestines blown out of his abs (hernia). This could also be used a verb as in going shamfing on someone's face. Could replace the gay sounding "posterized" in basketball.

Did you see Chris Wideman going shamf all over Anderson Silvas shin bone.
Did you see the Seahawks going shamf on the Broncos.
Dewight Howard just went shamf on Blake Griffin.
Hitler went shamf on the Jews.